Welcome to Zandronum!

Leading the way in newschool multiplayer Doom online.

Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.

Zandronum brings classic Doom into the 21st century, maintaining the essence of what has made Doom great for so many years and, at the same time, adding new features to modernize it, creating a fresh, fun new experience.

Here's why you should kill your time with Zandronum, versus vanilla Doom:

Useful features like a console, Quake-style key bindings, freelooking, and jumping

Support for many Doom engine based games including Heretic, Hexen, and Strife

Supports modern versions of Windows, Mac OS X, and Linux.

Compatible with Skulltag mods

Supports announcers and skins for online play

Runes, new weapons, and new monsters for modders

Bots, and support for custom bots

Open Source

Doesn't run on your flavor of operating system?
The source code is available on Bitbucket and all new code is licensed under a modified Sleepycat license.
More information about this is below.

So much more!

License

New code in Zandronum is released under a 4-clause license based on the OSI-approved and GPL-compatible Sleepycat License, with the addition of the "No Endorsement" clause from the 3-clause New BSD License.

Practically, this means that Zandronum's source code is safe to use in either GPL or Doom Source License/Raven Source License/etc. source ports as long as the terms of the Zandronum license are satisfied.

The Zandronum license only covers Zandronum-specific code. Some source files contain additional notices of original copyright by their contributors.